Elasticsearch
Elixir
- 30 Days of Elixir – Tim Morgan (HTML)
- Elixir School (HTML)
- Études for Elixir (HTML)
- Getting Started Guide (HTML) (PDF, MOBI, EPUB)
- Joy of Elixir – Ryan Bigg (HTML) – Source (🚧 in process)
- Learning Elixir – Joseph Kain Blog (HTML)
Ecto
- Ecto Getting Started Guide (HTML)
Phoenix
- Phoenix v1.3.0 Guide (HTML)
- Versioned APIs with Phoenix – Elvio Vicosa (PDF) (account required)
Emacs
- An Introduction to Programming in Emacs Lisp, 3rd Edition
- GNU Emacs Lisp Reference Manual
- GNU Emacs Manual (PDF)
Embedded Systems
- Control and Embedded Systems (HTML)
- Discovering the STM32 Microcontroller (PDF)
- Introduction to Microcontrollers (HTML)
Erlang
- Concurrent Programming in ERLANG (PDF)
- Erlang Handbook (PDF)
- Erlang Programming (HTML)
- Études for Erlang – J. David Eisenberg
- Getting Started with Erlang User’s Guide (HTML)
- Learn You Some Erlang For Great Good – Frederic Trottier-Hebert
- Making reliable distributed systems in the presence of software errors – Joe Armstrong (PDF)
- Stuff Goes Bad: Erlang in Anger – Fred Herbert (PDF)
ESP8266
- Kolban’s book on the ESP32 & ESP8266 (Leanpub account or valid email requested)